608 A New Genus of Minute Pauropod Myriapods. (October, 
be continuous from the head to the anal extremity, except at the 
points where the mouth and vent are situated. The mouth parts 
seem to be very similar to those of Pauropus, though in view of 
the fact that it has been very difficult to get a satisfactory view of 
the head portion of the animal, I will not be too explicit in my 
remarks on this head. The anal opening is guarded below and 
anteriorly by a semicircular plate of chitin, shown in Fig. 1, on 
the under side of the posterior extremity of the fifth body seg- 
ment. No evidence of tracheal openings has been observed, 
Eyes seem to be wanting, indeed the manner in which the first 
segment overhangs the head, would lead one to suppose that 
vision would be obstructed, rendering eyes useless; then the ~ 
remarkable antennary structure may, in a great measure, replace 
the eyes; and it is difficult to understand the use of the peduncu- 
late hyaline body unless it be auditory. May it not be that the 
Pauropoda as well as some Diplopods are blind ? Polyxenes, I 
am convinced, is provided with very delicate tractile organs at the 
extremity of the antennæ, and Bode figures minute auditory 
organs on the head behind its glossy black eyes, It seems to me, 
therefore, probable, that the multi-articulate, terminal filaments of 
the antennz of Pauropods are probably for the most part tactile, 
whilst the hyaline bodies are wholly or in part auditory in 
function. 
The /arve, of which I possess two specimens, yield no better 
evidence as to the composite nature of the head segment than the 
adults; the total number of visible segments in the young seems 
to be three with uncertain indications of a fourth. The evidence 
that these larva are the offspring of the adults which I had kept 
in captivity, is complete, having been taken from a chink in a bit 
of decayed wood into which the adults were repeatedly seen to 
crawl during the three months of their confinement. Moreover, 
the chitinous shells of the ova from which the young had escaped, 
were found in the same cranny. The larval Ewrypauropus, Fig- 1, 
is exceedingly depressed, more so relatively than the adult, and 
appearing on this account very much like a young Czme-, or bed- 
bug, and having much the same relative proportions, viz: gs of 
an inch long by of an inch wide, but altogether smaller. It 
presents the same peculiar features in the sculpture of the upper 
surface of its body segments as the adult, but the tubercles and 
spines are not as strongly developed, but the marginal serratures 
